because the reality is, that we are at risk, of having a terrorist attack in the united states. not just a day of september 11th. i watched people before the buildings came down. i watched people dying from debris that fell from the building and hit and crushed them. i was trapped in a building myself for 20 minutes, 25 minutes. so, sure, i can relate to the fear and it's a real fear. the thing that keeps me up at night the most is the whole idea of the use of nuclear material and the use of what i would ll extraordary biological weapons. chemical and biological weapons where we don't have the capacity yet to deal quite with that -- with that form of attack. i remember exactly the date. the night of september 14, 2001. president bush had come to new york that day. >> usa, usa, usa! >> 9:00, i set up a secret meeting at gracie mansion with my medical task force, brought in the law enforcement people and brought in all of the experts that i could find on biological weapons. they started telling me about the danger of smallpox and the choices i would have to make if there was a sma